| --- |
| { |
| "title": "week", |
| "language": "en" |
| } |
| --- |
| |
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| |
| ## week |
| ### Description |
| #### Syntax |
| |
| `INT WEEK(DATE date)` |
| `INT WEEK(DATE date, INT mode)` |
| |
| Returns the week number for date.The value of the mode argument defaults to 0. |
| The following table describes how the mode argument works. |
| |
| |Mode |First day of week |Range |Week 1 is the first week … | |
| |:----|:-----------------|:------|:-----------------------------| |
| |0 |Sunday |0-53 |with a Sunday in this year | |
| |1 |Monday |0-53 |with 4 or more days this year | |
| |2 |Sunday |1-53 |with a Sunday in this year | |
| |3 |Monday |1-53 |with 4 or more days this year | |
| |4 |Sunday |0-53 |with 4 or more days this year | |
| |5 |Monday |0-53 |with a Monday in this year | |
| |6 |Sunday |1-53 |with 4 or more days this year | |
| |7 |Monday |1-53 |with a Monday in this year | |
| |
| The parameter is Date or Datetime type |
| |
| ### example |
| ``` |
| mysql> select week('2020-1-1'); |
| +------------------+ |
| | week('2020-1-1') | |
| +------------------+ |
| | 0 | |
| +------------------+ |
| ``` |
| ``` |
| mysql> select week('2020-7-1',1); |
| +---------------------+ |
| | week('2020-7-1', 1) | |
| +---------------------+ |
| | 27 | |
| +---------------------+ |
| ``` |
| ### keywords |
| WEEK |
